Maybe this forum or website will give you more help.
About power quesitons,go to http://powerforum.co.za/
Have question about circuit, go to https://www.allaboutcircuits.com/ Buy electronic product, go to http://www.kynix.com or http://www.ti.com/ About signal,system,control ,go to http://archives.math.utk.edu/ learn electronic knowledge, go to https://facebookcomshaynechen79.wordpress.com/ About circuit,go to http://www.discovercircuits.com/list.html Electronic components industry news( any company conclude ti,panasonic,MOLEX,NXP,SUMSUNG,XILINX or more), follow kynix company's official twitter: https://twitter.com/Kynixsemi or the offical facebook:https://www.facebook.com/Kynix8/ Any question about general electronics, go to :http://forum.electronicsforu.com/ About robot or project ,go to https://www.instructables.com/